Home / 129,904.40-194,856.60-108,909.20

Finding the Fourth Proportional to 129,904.40, 194,856.60 and 108,909.20

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Solution

The fourth proportional to 129,904.40, 194,856.60 and 108,909.20 is: 163,363.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,904.40 : 194,856.60 = 108,909.20 : x
  2. Step 2: Convert to fraction form
    129,904.40/194,856.60 = 108,909.20/x
  3. Step 3: Cross multiply
    129,904.40x = 194,856.60 × 108,909.20
  4. Step 4: Simplify right side
    129,904.40x = 21,221,676,420.72
  5. Step 5: Solve for x
    x = 21,221,676,420.72/129,904.40
  6. Step 6: Final answer
    x = 163,363.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.